john brennan would become the new head of cia. both appointments have to be approved by the u.s. senate. nominations have already caused controversy. >> president obama is putting the finishing touches to his national security team. introducing the man he wants to lead the pentagon and cia. >> these two leaders have dedicated their lives to protecting our country. i urge the senate to confirm them as soon as possible. >> both nominees face difficult questions before they are confirmed in the u.s. senate. chuck hagel seems perfect for the pentagon. a former republican senator from nebraska. some conservatives say he is not strong enough supporter of israel, even though he voted many times to send billions of dollars there. >> i will do my best for our country, for those i represent at the pentagon, and for all of our citizens. >> john brennan is a long time administration officials who spent 25 years in the cia. >> i will make my mission to ensure the cia has the tools it needs to keep our nation safe and that its work always reflects the liberties, the freedoms, and the values we